Buggy code:
final class QueryHelper { private static final int DEFAULT_MAX = 1000 ; private QueryHelper ( ) { } static Collection < ? > executeQuery ( final Map parameters , final Query query , final QueryPostProcessor postProcessor ) { } private static List < ? > getObjectsOfCandidateType ( final Set < Columns > keys , final ExecutionContext context , final Class < ? > candidateClass , final boolean subclasses , final Bytes identityColumn , final Bytes descriminatorColumn , final ByteConverterContext byteConverter ) { final ClassLoaderResolver resolver = context . getClassLoaderResolver ( ) ; final AbstractClassMetaData acmd = context . getMetaDataManager ( ) . getMetaDataForClass ( candidateClass . getName ( ) , resolver ) ; final List < Object > results = new ArrayList < Object > ( keys . size ( ) ) ; for ( final Columns idBytes : keys ) { final Class < ? > targetClass ; if ( descriminatorColumn != null ) { final String descriminatorValue = byteConverter . getString ( idBytes . getColumnValue ( descriminatorColumn ) ) ; final String className = MetaDataUtils . getClassNameFromDiscriminatorValue ( descriminatorValue , acmd . getDiscriminatorMetaData ( ) , context ) ; targetClass = resolver . classForName ( className ) ; } else { targetClass = candidateClass ; } final Object identity = byteConverter . getObjectIdentity ( context , targetClass , idBytes . getColumnValue ( identityColumn ) ) ; if ( ! ( identity instanceof SingleFieldIdentity ) ) { throw new NucleusDataStoreException ( "Only<seq2seq4repair_space>single<seq2seq4repair_space>field<seq2seq4repair_space>identities<seq2seq4repair_space>are<seq2seq4repair_space>supported" ) ; } final String idClassName = ( ( SingleFieldIdentity ) ( identity ) ) . getTargetClassName ( ) ; <START_BUG> if ( ! ( ClassUtils . typesAreCompatible ( candidateClass , idClassName , resolver ) ) ) { <END_BUG> throw new NucleusDataStoreException ( ( ( ( ( "The<seq2seq4repair_space>stored<seq2seq4repair_space>class's<seq2seq4repair_space>identity<seq2seq4repair_space>is<seq2seq4repair_space>for<seq2seq4repair_space>a<seq2seq4repair_space>class<seq2seq4repair_space>" + ( ( "which<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>the<seq2seq4repair_space>same<seq2seq4repair_space>nor<seq2seq4repair_space>a<seq2seq4repair_space>subclass<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>" + "candidate<seq2seq4repair_space>class<seq2seq4repair_space>to<seq2seq4repair_space>be<seq2seq4repair_space>selected.<seq2seq4repair_space>This<seq2seq4repair_space>should<seq2seq4repair_space>" ) + "not<seq2seq4repair_space>happen.\nIdentity<seq2seq4repair_space>class<seq2seq4repair_space>name:<seq2seq4repair_space>" ) ) + idClassName ) + "\nTarget<seq2seq4repair_space>class<seq2seq4repair_space>name:<seq2seq4repair_space>" ) + ( targetClass . getName ( ) ) ) ) ; } final Object returned = context . findObject ( identity , true , subclasses , candidateClass . getName ( ) ) ; if ( returned == null ) { throw new NucleusDataStoreException ( "findObject<seq2seq4repair_space>silently<seq2seq4repair_space>returned<seq2seq4repair_space>null!" ) ; } results . add ( returned ) ; } return results ; } private static Set < Columns > getAll ( final String poolName , final String cfName , final Bytes [ ] selectColumns , final int maxSize ) { } private static boolean isQueryNonIndexed ( final Expression filter , final CassandraQueryExpressionEvaluator evaluator , final Class < ? > candidateClass ) { } private static Set < Columns > runQuery ( final Expression filter , final CassandraQueryExpressionEvaluator evaluator , final AbstractClassMetaData acmd , final ExecutionContext context , final Bytes [ ] selectColumns ) { } private static Bytes getDiscriminatorColumnName ( final AbstractClassMetaData acmd ) { } }

Fix:
if ( ! ( ClassUtils . typesAreCompatible ( targetClass , idClassName , resolver ) ) ) {